Car Park/Street lamps
- Thread starter Dave2010
- Start date
Would recommend the CAT and GENNY to trace the route of the cable between the coulmns but to use this equiptment you need proper training. There is a machine our client use on cabel faults made by 3M called a dynatel it places a signal onto the affected cable and tells you where the fault is likely to be. We have a high sucess rate using this device on locating faults in the underground cable network.
Myabe it would be best jsut to recable between the two columns but lay the SWA in some ducting to make a future recable easier.
Myabe it would be best jsut to recable between the two columns but lay the SWA in some ducting to make a future recable easier.
Hmm dont agree with that sorry. If it were a council owned column with a DNO supply direct into it then that would be different but these are private columns probably switched from inside the building. The fused spurs are providing the fusing and isolation required so in my view they dont need changing.
we tried one of those CAT's once to try and see why the mains to the weigh bridge ( dissused, lights run off it for car park ) had lost 2 phases..
traced the cable across the street, along the path, straight past the weigh bridge and straight to the street light..
thought "that can't be right....!!!" tried it again, same thing..
turned the singal generator off and it went away.. confirming that we wern't just picking up the street light mains..
after calling in the DNO to have a look, seems our cable crossed theirs and at some point they had cut through both somehow and joined them all together..
as we'd been getting free power to the car park lights for god knows how many years and probably backfeeding one phase of the entire installation....
traced the cable across the street, along the path, straight past the weigh bridge and straight to the street light..
thought "that can't be right....!!!" tried it again, same thing..
turned the singal generator off and it went away.. confirming that we wern't just picking up the street light mains..
after calling in the DNO to have a look, seems our cable crossed theirs and at some point they had cut through both somehow and joined them all together..
as we'd been getting free power to the car park lights for god knows how many years and probably backfeeding one phase of the entire installation....
I think it depends on the mood of the installer on the day, personally I prefer to run them individually to the bottom, that way I can separate them out when a ballast burns up etc. Also means less messing about at the top.
it's also hard to fish the wire form one arm to the other on some of these 2 arm lights..
easier to wire all the heads on the ground with long leads then feed the cables down the arms and pole when you put the heads on.. less messing about and gravity does all the hard work for you..
easier to wire all the heads on the ground with long leads then feed the cables down the arms and pole when you put the heads on.. less messing about and gravity does all the hard work for you..
I would always drop two lengths down the column. With the correct cutout you have bags of room and two flex outlets either side of the fuse carrier...
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